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Physics in Miss Congeniality
One of my favorite movies is Miss Congeniality! If you have not seen it, number one, you should, but it is about an FBI agent who goes undercover in the Miss United States Pageant. Because she is not by any means a pageant star, for the talent portion she shows off her amazing skills playing music on different types of wine glasses. The reason sound is produced as she swirls her fingertip around the glasses is due to the principal called resonance. Resonance occurs when a system vibrates another system with natural frequency. Different size and shaped glasses cause differences in pitch because the sound wave vibrate differently due to their differing frequency. Nothing better than coming across some physics in one of your favorite films.
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This Year in Review
This year has been a wild ride, and the AP weeks are approaching fast. With the third quarter ending, and soon most AP classes to have not much work to do, I need to take the time to look back on this year. Physics was a struggle, but that made it a lot of fun. I have learned a lot, and have learned new was of how to learn based on the style and difficulty of a class. It was a great choice to make and it has really helped me to learn what is in store for the future at college. Calc didn't catch up to physics until it was toward the end of the second quarter, which made the math fun, but that was a good learning opportunity as well. As the year slowly comes to an end I am happy but sad as this year has been rough, but I couldn't have asked for a better year to end on.
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Musing
I can already tell this post will have a lot less structure than usual.
I've been thinking about special relativity quite a bit more than usual these past few days, in particular, the twins paradox. We didn't discuss it, but it seems to me that the actual aging is not the paradox involved, but the question of which twin aged how much is the paradox, since the earth twin would believe the other twin to be 40 years older and the space twin would think himself only 4 years older. Secondly, we discussed that special relativity applied to objects either in constant motion or at rest. In other words, objects in an inertial frame of reference.
That being said, the brother traveling in the spaceship must have experienced some sort of acceleration throughout his journey, when he left earth for example, and most likely when he turned around and when returned to earth. Therefore, I do not even think that the laws of special relativity apply to this situation. The question then for me is in that situation what would happen?
I imagine that the twin on earth has aged physically by forty years and that the twin who traveled has aged physically by just four years, and that no paradox exists at all.
Something else I have been thinking about: E=MC^2
I never truly understood the principle, so I looked online for the experiment used to determine this formula, and then attempted to derive it myself. I found that a useful experiment to reference (although theoretical) is this: a box is stationary in a vaccuum. A photon moves through the box from left to right. Since a photon technically has momentum, the box must then move left in order to conserve momentum of the system. When the photon reaches the right side of the box, the impact causes the box to stop moving.
However, since no external forces acted on the box, its center of mass must be in the same position as before (new concept for me!) but the box has moved left. Therefore, Einstein determined the photon must have a mass equivalent in order to satisfy the laws of physics.
I dreged up an equatin devised by Einstien to get started. I wonder if he came up with this expression before or after he determined that E=mC^2, because that would make this post seem rather silly. Since, a photon is massless, I was able to draw a simpler conclusion from his equation.The momentum rho is the momentum of both the box and the photon, by conservation of momentum.
Running low on ideas, I nosed around some more, and found that I should start thinking about the time it takes the photon to move from side to side. That train of thought led me to the following. The key is that velocity is change in displacement over time and that the time the photon required to cross the box is the length of the box side over the photon's velocity.
Thanks to what I learned this year in class, I know the center of mass of a system can be expressed the sums of products of mass and displacement of all individual parts over the sum of all individual masses.
I determined that if the center of mass did not move, then the position of the center of mass must have been in the same position as the box after the system resolves itself.
We can substitute X2 (the displacement of the photon) to be L the length of the box because it traveled the full length of the box.
Reviving the previous equation created and substituting it for m(delta x):
(I can do this because although the expression reads differently, the displacement after represents the displacement of the photon after colliding with the box's side, and the Mass is of the same object in both cases)
I find that deriving an equation always helps me to conceptualize it, and I hope this derivation helps you too! In my probing I also discovered that all mass has a measurable frequency, although it has little or no effect on people. More on that later...
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Little Tiny Pieces
This year has been amazing for me. I never thought that I would be able to do things such as a drag force derivation, or transient analysis of circuits, but I proved myself wrong. Through hard work and a lot of time, I matured through this year into an independent student who has faith in his own intellectual abilities which can all be attributed to the workload of AP Physics C. I learned that it isn't bad to ask questions as long as you have tried your hardest and thought about it until you cannot anymore. I have also learned to attack problems with other people, and combine knowledge in order to come to a solution which is extremely satisfying in the end. I now feel much more prepared for college and the challenges that I will face there. I have learned that it is OK to fail as long as you have put your best effort forward, because it only means you have room for improvement. Physics C has brought me many emotions both happy and sad, and has pushed my thinking to places It has never been before. I will undoubtedly miss Physics C, but will look back on it as a stepping stone in my path towards higher learning and eventually a career.
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Paddle Boarding
In July, I will be taking a vacation to the beautiful island of Turks and Caicos as a gradation present. At the resort, there are many excursions to choose from. However, the coolest one that I saw was a paddle boarding adventure through a cove with iguanas. Though paddle boarding may look easy, I imagine that there is a lot of physics involved and that it it a lot harder. The rider has to apply enough work and force to the paddle in order to propel the board forward. This can prove to be a struggle if you don't have enough force to propel yourself through the different currents.
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Physics of Speakers
Speakers contain an electromagnet which is a coil of wire that the current flows through. First, it starts with a battery and then moves into the coil of wire. When the magnet vibrates the air molecules start moving and create waves. The waves then produce the sound that you can hear. Also there is energy transfer in a speaker. For example, the phone has electric and chemical potential energy because its a chemical reaction that causes the electricity to flow. Chemical turns into electrical and then flows through the wire. When the energy flows through the wire, it moves into a coil of wire which has a changing magnetic field because the song changes the frequency of the wire. However the magnet has a contestant magnetic field and when its placed against the coil of wires magnetic field, it allows the magnet to vibrate and in the end it makes sound.
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Reflecting On Physics Class
It seems like just yesterday I was beginning regents physics class, and now it's almost over. It's been a struggle, but somehow, I got through it. Since this is my last blog post ever, I wanted to take this opportunity to reflect on this year in regents physics, so here it goes.
When I first started this class, I knew right away I was going to have a hard time in it. I have never been very good at science, but I figured since physics involves a lot of math, it would not be too bad. I was mistaken. Usually in the beginning of a difficult class, I never understand anything at first. But one day, all of a sudden, I will just automatically understand it. That never happened for this class unfortunately.
Though this class was extremely hard for me, I did manage to learn a couple of things. There are some units I kind of enjoyed, and the catapult project was fun. A lot of the demonstrations were pretty cool too. The most valuable thing I learned this year was that your attitude can completely make a situation either better, or much, much worse. When I walked into class with a negative attitude, I never learned anything. But when I walked in with a semi-positive attitude, I actually picked up on a thing or two.
Though I will most likely never take a physics class again, I have to say that in a way, I'm glad I stuck with it throughout this year. Dropping did occur to me a few times, but if I had, then I knew whatever work I had put into this class would have been for nothing. In life, everyone has to go through things they might not want to, but in the end, things turn out to be not so bad. As many times as I might have said I hated this class, I guess it really wasn't so bad after all. And taking this class really made me admire anyone who goes into this field, because it is not easy.
To conclude my last blog post ever, I just want to thank Mr. Fullerton for putting up with my horrible test grades and negativity all year. Taking regents physics class was definitely an experience I will never forget, and I haven't really decided if that's a good or bad thing yet. Just kidding! Maybe.
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Physics of MRI
Ever since I had an MRI on my knee (worst experience ever) I wanted to discover what was really going on. Sitting still for 32 minutes really makes you start to think about everything. I wondered what the machine was really doing. I had to take off all of my jewelry, or clothes that may have metal on them and until 9 minutes into it did I realize I left my ring on. I only noticed because it was vibrating and made my hand feel weird. I pulled the emergency cord and told them what was wrong and they allowed me to keep it on because that part of my body was not in the tube.
I found a really good video that started off by explaining the waves, amplitude, frequency, phase, etc. The concepts are kind of hard so I had to keep re-watching parts of the video. I also still need a lot of explanation. What I did pick up was this is one of the times electrons aren't as important as the Nucleus. Using the technology and creating the clear pictures, tumor tissues could be differed from normal tissues. It became the quickest (although not very quick if you're actually in one) screening tool to detect these defaults in the human body. To make an MRI picture, they use 3D space to focus the image of the ligaments.
This was a very hard topic to research especially since it is only my first year of physics but Mr. Fullerton I'm sure could easily understand it;
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Interstellar-+
I watched Interstellar the other day and was surprised by the amount of theoretical physics there were. One part of the movie they mentioned magnetic fields, which are real physics, but i thought it was cool that they incorporated that into the movie to show the message. Allow we can't just change magnet fields with the push of a book none the less cool idea. Now we will get into the theoretics. The astronauts in the movie didn't experience time travel but did go through a black hole that had it's own time spand due to being in another universe. This connected to the idea that time travel could possibly be harnessed. Weird ending but physics theoretical and real were present so that was cool.
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Studying for the Regents
SO, many people have many different ways to study for the regents physics exam including myself and my friends.
First i picked kids from the AP track to help me study for physics because i knew that they would be able to teach me a lot more than if i were studying alone. They did teach me a lot!
I drove to pick up Bakari from his house using my car Stanley. Stanley changed potential energy to kinetic energy as it changed gas to moving fuel. I had told Alan, our other study party member, to arrive at two, and i arrived at Bakari's at 1:50. It is safe to say i increased my velocity from the trip to his house to the trip back home. I accelerated uniformly until Bakari told me that i could just use the cruise control. My cruise control turned on and would not turn off until i tapped on the break. This instantly reminded me of the law that an object will stay in motion unless acted upon by an outside force, this outside force being my foot on the break.
After running into many red lights we turned onto the bridge which had a different road surface than the street. This caused greater frictional force against the car which made my acceleration increase so that i could get past the high coefficient of friction.
When we finally arrived at my house we had to put the top back up on my convertible. This was physics in itself as well. The button i pressed used mechanical energy to get the top closed so we could go inside and study.
Of course studying with boys they wanted to listen to music. This music would produce sound waves from my computer and into the awaiting ear drums of us studiers. What they didn't know is my sister was down in the basement practicing for her singing jury. Before we could turn on our music we had to figure out how to block out Taylors music. The sound waves were traveling from the basement up to the living room by using diffraction. Her sound waves went from her, across the basement, around the corner, up the stairs, around another corner and into our ears. Very impressive!
Quickly enough the boys grew hungry. I, being the lovely hostess, offered them chicken wing dip. I had to warm it up first in the microwave. These waves created heat and energy to make the chicken wing dip at a good temperature for eating. The mechanical energy of the boys chewing was only accompanied by a refreshing drink.
Both boys wanted straws to drink their beverages with. The straws in the can was immediately refracted so we couldn't tell where it was in the liquid.
The door opened, my door consisting of potential energy turned to kinetic as Sam entered my house. He ran in, pushed me to the ground and sat on me. his momentum before equaled his momentum afterwards as he tickled me until i got up an hid behind Alan. I couldn't replicate his force by any means because my mass was much less than his however i could remove the attraction between us by moving away from him. Our distance increased which created a smaller force of gravity between us.
Alan quickly helped change the subject by swinging his iPod around and around on the wire. Bakari and I were quick to analyze this as having centripetal acceleration moving toward Alan's hand that was spinning the wire. We said that it had a uniform velocity and if we had a timer on our hands or a ruler we would be able to figure out the acceleration.
Sam also assisted us with this experiment as he swung his keys in a circle around his hand. He however experimented with the idea that if you were to cut the string the velocity would shoot outside of the circle. He unexpectedly let go of his keys allowing us to see which way the velocity was being allowed to go. The keys shot from his hand and into the wall behind him.
All too soon the boys had to leave, however Its safe to say that although they didn't realize it, these boys helped me a lot more than they thought they would.
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Water Skiing
On a slightly-longer-than-necessary-immediate-family-only-two-week trip to the Adirondack Mountains over the summer past, I learned how to waterski on one ski. Once up on two skis, the forward velocity of the boat makes the water 'act' as it would if you had fallen on it from a very high position: it 'hardens' beneath you, making it possible for you to basically stand on your skis, on the water. Once you get going and find yourself advancing in a relatively straight line, you slowly add pressure to one foot, and begin to slide your other ski off by lifting your heel. More often than not, you will fall once your weight leaves the ski you are trying to get rid of. But eventually I succeeded in keeping upright after dropping a ski! Next summer's task: getting up on only one ski to begin with!
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Drumming
Like a sound wave, the waves produced by drums are longitudinal. The vibration produced when a drum is hit creates pressure waves in the air. These pressure waves describe the sound. The more the drum head bends, the volume of sound increases, a higher frequency is created and the amplitude if affected. Pitches of drums range from low frequency basses to high frequency pitches. Like a speaker which amplifies sound through the air, noise from the drums travel to our ears because of the sound vibrations and type of waves. When the vibrating drum vibrates the air molecules around it, it does so at the same frequency to produce a beautiful sound.
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Fun with Shapes in the Universe!
Or more like shape OF the universe! The only book I read anymore is The Cosmic Cocktail by Katherine Freeze, and one topic she came upon was the shape of the universe.
This topic is a very hard one to think of in your head, because its hard to imagine a universe in which we live in expanding! Yet as I showed in another blog post, Hubble himself showed that it must be expanding since galaxies are growing farther away from us!
So then what just shape are we expanding from?? Or Into??? Well there are three options we have. If the density of the universe is less than the critical mass density (found in proportion to the square of Hubble's constant then we are left with a negatively curved geometry, like a saddle. If it matches the mass found from Hubble's constant than we are left with a flat geometry like a piece of paper. But if the density is greater than the one we expect, we are left with a spherical geometry.
Flat geometry is the one Einstein preferred because is it easiest to work with a flat axis instead of a curved one. The effects of these different geometries are interesting though. For example, if the universe was spherical than there would not be enough mass (and density) so after expanding a "Big Crunch" will occur after the Big Bang and the universe will collapse on itself. The other two options are not AS sad though. The flat and hyperboloid geometries on the other hand will continue to expand forever! This will lead to a big chill since the universe will be so expansive and will never stop. I did say as.
The obvious evidence points to flat, the simple answer. It has good evidence behind it though, if the universe was spherical the "Big Crunch" would have happened extremely soon after and there would not have been enough time for the galaxies and such to form! Also a hyperboloid geometry would have led to a much faster expansion than seen a the "Big Chill" would have lead to the same result.
The numerical evidence behind flat geometry is iffy at best though, and is also very complicated, so stay tuned for next time when you can decide for yourself if our universe is like a pancake or a basketball!
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wave interference
while bored many of us tend to listen to music, but we often don't realize how lucky we are not to have to deal with electromagnetic interference because of the newly incorporated technology such as wi-fi and error correcting systems. going back to older radios such as the analogue, many of these would have problems receiving the correct signal as there were a lot and they could not distinguish the in-band unwanted from the intended; thus, many times radio stations were disrupted or hard to dial in on.
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The Physics of Frozen
Nearing the end of the year 2013, a new Disney movie came out, sending society into fanatic obsession. This movie was of course, Frozen. Frozen tells the story of Queen Elsa and her struggle to contain her gift. The majority of the movie is her sister, Ana and her entourage tracking down Elsa to try to help her. Well trolls, evil fiances, and talking snowmen later, the world is completely addicted. I still am, quite frankly.
While I watched this movie a hundred times, I wasn't just belting along to every song in the movie, I was baffled at how realistic it was compared to other animated movies. They made the characters 3D, they used a real reindeer to crate Sven, and they spent years making it perfect. (I'm not actually sure how long it took them, but it did take a long time to perfect.) Anyway, they are now in the works of making a second and...oh right! Physics...
Well when I watched the movie after I entered my junior year, physics came into my brain. The animators took a lot of time to make sure that the movie followed physics, which I can't say for many animated films. Especially in action scenes, I noticed how they applied how objects would fall in free fall, also how all three of Newton'd laws were used correctly. Another way it followed physics was with their use of projectile motion as well as the other aspects of kinematics. When objects were moving around the screen and giving lines, the Doppler Effect was slightly apparent. This only scratches the surface at all the tech team to create a timeless classic.
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I AM BREAD
Lately in the video game world there has been a lot of purposefully bad simulator games: Surgeon Simulator and Rock Simulator to name a couple. Now, there is a sim game called I AM BREAD. In the game you play as, well, bread. Duh. The purpose of every level is to become toast and stay edible. The best part of the game is that it has really wonky controls. Also, the physics make little sense. The bread you play as has grip and can climb walls. It also seems to be a rather heavy mass since it can break bottles and push bowling balls around. The series Teens React has a video with it:
My favorite part is that they all ask "Wait, so I'm the bread?"
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How Airplanes Fly
I was thinking about going on vacation since it is now summer and that lead me to the question of how to airplanes fly. I have come to find that it is the result of Bernoulli's experiment that resulted in the founding that if air speeds up the pressure is lowered. This explains how the wings are lifted. As the air goes faster over the top of the wing,it creates the region of low pressure.
After finding out this informetion I came to the question of, why does the air go faster over the top of the wing? I came to the answer that the distance that the air must travel is directly related to it's speed.
The avergage speeds of the air over the top and under the wing are determined by measuring the distances therefore we can calculate the speed using our formulas. From Bernoulli's experiment it is stated that we can find the pressure forces and therefore the lift.
A wing generating lift is used through Newton's first and third laws. The first law states that an object in motion tends to stay in motion and object in rest tends to stay in rest unless a force is acted upon it. His third law states that for every action there is an equal and opposite reaction.
Hope you enjoy this post!
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My phone's tragic story
as some of you know I work at 2 ton ton'y where we have real good pizza. And the other day I had to walk to work in the rain. And so I was walking up Hudson and crossing th cross walk in front of wegmans, you know the big long one at the main entrance. as I was walking along I looked over my shoulder and noticed a car was waiting to pull into wegamans, and I didn't want to hold that nice man up I did like a half jog to get out of his way. I continued my walk to work as usual and right before I was about to enter my work place I checked my pockets to see if I had everything, and my phone WAS NOT in my pockets. so I sprinted back as fast as I could to that cross walk because I knew it had to be there. As I approached the beginning of the cross walk I could see my phone face down in road. But then the worst thing happened, I watch a ford f-150 run over my phone. I walked slowly toward my phone as if I were in a dramatic sappy movie picked up my phone and observed my screen. nearly completely shattered with no hope of working again. But then as im holding my phone in despair I get a text and my screen lights up. and so my still works but moral of the story is pedestrians have the right away and take your time on those cross walks.
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Electricity and Music
Electricity and music both are connected not only through electric instruments but through our brain. In the second video it compares the brain to an orchestra and shows how even sitting down relaxed your brain is constantly moving. I also have had EEGs in order to monitor how my brain works during a seizure. Once I got to see a picture of my brain and all the electric currents going to all sorts of areas of my brain. The seizure would start in two different places in my brain then continue seemingly randomly until it ends.
We don't exactly know what causes my seizures but one problem my family has is that our brains always move to fast for us to do anything with a lot of the ideas we have. The first video on the other hand reminds me of my brother and how he was electrocuted at a young age. I wonder if we had any detectors connected to him how fast the frequencies would be going then. I think my favorite part of the video was when you could hear the sound because it added a whole different dimension to how your body can help transfer different frequencies.
With all the sound you could hear from his detector it makes you wonder what happens when you are using your cell phone. What frequencies go through your body? Can this really cause cancer? These questions and so much more are constantly being asked like how does are neurons know how to organize themselves in the brain when no one instructs them where to go. The brain is one thing I can't wait for the scientists to understand better so we can understand the miracles that happen inside us everyday.
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Physics~More Wave Examples
Waves they're everywhere. They're apart of our daily lives. We experience waves 24/7 whether its from sound waves, light waves, etc.! In this blog post I'm going to be discussing several examples of waves in our daily life.
Light waves- The sun is the main source of light waves on earth and require no medium to get to us.
Sound Waves- These waves require a medium to get to us.
For example if you put a bell in a vacuum sealed, air tight case and hit it then you wouldn't be able to hear the bell but you could still see it. This is because light waves don't need a medium but sound waves do.
This sums up a short summary on waves thanks for reading.
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Physics in Catching
There are tons of physics in catching a pass, rather that pass being from the real sports football basketball or maybe a sport like baseball. A lot of the physics actually comes from the pass. For example tracking where the trajectory of the ball is being place along with the force that was put on the ball in order to make it move sense we know if a force wasn’t put on it then it would never be moving in the first place. The acceleration of the ball basically right when it reaches your hand must reach 0m/s2 or the force of the ball will end up having you not showcase your ability to catch the ball. Typically when you are about to catch something you bend your hands in a glove like shape, this is because the greater the area of a place for the ball to land the less the force of the pass.
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How you can dodge a bullet
I saw this on myth busters, and I decided, even though they said it was not possible, I can still try, or dream of trying at least. It is possible to dodge the bullet of a sniper rifle. If the sniper rifle were far enough, that is.
When the sniper rifle shoots the bullet, 3 components travel towards the target. Light waves, sound waves and a bullet. Light is faster then the bullet and the sound. Having said that, if the sniper was far enough to have a reasonable amount of time between the muzzle flash and the sound getting to you, it is possible to get out of the way. As soon as someone sees the muzzle flash, they could get out of the way, before the sound and bullet get there.
Having said that, DO NOT TRY THAT. it's not possible. I just needed a good story that people would read. It's possible in theory, but never a good idea by any stretch.
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Physics of sleeping
It is quite interesting how physics can be found in such random parts of your daily life. One such example of this is sleeping. When a person sleeps, they are exerting a force on the bed that they are sleeping on. According to Newton's Third Law, the bed then exerts that same force back on to the person sleeping. In addition to this, gravity holds the person down to the bed, keeping them grounded. When I need to wake up in the morning, I set an alarm on my phone and put my ringer on high. This way, the high frequency pierces through my sleep, and wakes me up. I have never realized just how much physics is in such a simple act!
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Bizarre Video Game Physics: Doom.
This ones going to be a throw back to the beginning of first-person-shooters online. Doom, the game where you stop the forces from hell taking over the earth (or if you're a stickler it's Doom 3 and you close the gate to Hell on Mars.) and you are the only guy ( Doom Guy, heh, bad pun sorry) to complete the task....or if you want to play the older games with a friend and then have it turn into an all out brawl with your fists. With this i'm ignoring the everything else that has to do with the physics because most things like floating eyes that spit fire and a portal to Hell on Mars can possibly be explained, i'm focusing on how the heck Doom Guy can carry nine different guns. This guy carries around shotguns, a pistol, a rocket launcher,the BFG and a chainsaw. Yes he can be strong enough to carry but where does he put them when he isn't using them, let alone all the ammo for it. I would have a video for this one but man is the game as bloody and gory as it can possibly be for it's time, instead have a picture.
Also, who's excited for Doom 4?
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Catapult
Creating a catapult has shown me many things relating to physics. What we have learned in class that relates back to a catapult is projectile motion and projectile angles. When you use a catapult you can find its velocity, distance, acceleration and time. You are able to find its horizontal and verticle projectile. The horizontal velocity will be constant which means the acceleration will be 0 m/s^2. Its verticle component would have an initial velocity of 0 and its final velocity would increase. You can use the kinematic equations to solve for its velocity, distance, acceleration or time. You just have to know three of the five to find the unknown.
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